CVE-2021-4149
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.
Se encontró una vulnerabilidad en la función btrfs_alloc_tree_b en el archivo fs/btrfs/extent-tree.c en el kernel de Linux debido a una operación de bloqueo inapropiada en btrfs. En este fallo, un usuario con privilegio local puede causar una denegación de servicio (DOS) debido a un problema de bloqueo
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-12-21 CVE Reserved
- 2022-03-23 CVE Published
- 2023-11-12 EPSS Updated
- 2024-08-03 CVE Updated
- 2024-08-03 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-667: Improper Locking
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2026485 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://lkml.org/lkml/2021/10/18/885 | 2024-08-03 | |
| https://lkml.org/lkml/2021/9/13/2565 | 2024-08-03 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.15 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | rc1 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | rc2 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | rc3 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | rc4 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.15 Search vendor "Linux" for product "Linux Kernel" and version "5.15" | rc5 |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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